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(No Model.) 3 Sheets-Sheet 1.-

E. NGRTON 8v J. G. HODGSON. SHEET METAL BAEEEL MACHINE.

No. 354,569. Patented Deo. 21, 1886.

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, (No Model.) 3 sheets-sheet 2.

E. NGRTON 8v J. G; IFIODCTSOII.v SHEET MBTALBARRBL MACHINE.

l No. 354,569. Padzen'ed1360.21,V 1886.

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SHEET METAL BARRELMAGEINE.

` Patented Dee. 21, 1886.

(No Model.) e

' E. NORTON 8v J. G. HODGSON.

v UNITED STATES PATENT OFFICE.

EDWIN NORTON AND JOHN G. HODGSON, OF CHICAGO, ILLINOIS, ASSIGNORSA TOEDVIN NORTON AND OLIVER W. NORTON, BOTH OF SAME PLACE.

SHEET-METAL-BARREL MACHINE.

sPECIFICATIoN'rorming par: of Letters Patent'No. 354,569, dated December21, 183e.

. Application filed September 3, 1886. Serial No. 2152.569.

.To @ZZ whom it may concern,.-

Beit known that we, EDWIN NORTON and JOHN G. HODGsoN, citizens of theUnited States, residing in Chicago, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in Machines forMaking Sheet-Metal Barrel-Bodies, of which the following is aspecification;

' This invention relates to the manufacture of sheet-metal vessels of abarrel form having gore shape or tapering longitudinal folds or 4 ribsextending from end to end, to strengthen the body and'give it thedesired barrel or curved shape. In such bodies the longitudinal foldsproject radially inward, and would interfere with the proper insertingor seating of the ends or heads in the end of the barrelbody, and at therim or extreme end of the body these folds are turned or folded down datto permit the insertion of the heads.

The object of the present invention is to provide a machine for turningor folding down the folds or ribs at the rims of such barrel or otherbody; and to this end it consists in the novel devices and novelcombinations of de'- vices herein shown and described, and moreparticularly pointed out in the claims.

In the accompanying drawings,which form a part of this specification,and in which similar letters of reference indicate like parts, Figure lis a plan view of a device embodying our invention. Fig. 2 is a sideelevation. Fig. 3 is an end view. Fig. 4 is a central longitudinalsection of the reciprocating expansible revolving former. Fig. 5 is asimilar vieuT showing the former expanded. Fig. 6 is a cross-section online 6 6 of Fig. 4. Fig. 7 .is a cross-section on line 6 6 of Fig. 5.Figs. 8 ad.9 are views showing the sheet-1netal barrel-body before andafter it is operated upon by the machine.

In said drawings, A represents the frame of the machine; B, thereciprocating mold for clamping the'barrel or other body to be operatedupon. The interior of this mold corresponds in shape to the barrel orbody to be clamped therein. The upper half or part, B, of the mold ishinged to the lower half, and provided with locking clamps or devicesop- 50 posite the hinge. The hinged part of the mold (No model.)

is also furnished with a counterbalance-weight, 1),'to facilitate theopening'and closing of the mold. The lower half of the mold Breciprocates in a suitable slideway, A', on the 'fra-me of the machine,the guides b fitting in said slideway.

C C are formers journaled on radial slides c c, which are mounted inradial slots or holes in the hollow revolving head D.

The formers C are preferably three in num- 6o ber, and have conicalfaces c c' at each end to correspond to the curve or inclination of themold B at its extremities. The radial slides c have or should havetapering or wedging inner ends, and are simultaneously operated by areciprocating pin or wedge, D', having two cone-faces, d d, and whichpin D is mounted in the hollow revolving head D. The wedge or pin D isoperated by means of treadle or foot-lever E through link E', bent leverE2, 7o having yoke e, pivoted to a colla-13e', on the end of the shaftor wedge D. The revolving head D is journaled in a suitable bearing, F,on the frameof the machine, and is driven from the driving-shaft G by abevelgear, g, thereon, which meshes with a bevel-gear, g', on therevolving head D or its shaft.

In operation the sheet-metal barrel,as shown in Fig. 8, is placedwithinthe reciprocating mold B. The operator then slides said mold 8o over therevolving former C C, the former being then contracted, as shown inFigs. l and 2, and then the operator, by placing his foot uponthetreadle E, expands the formers C C radiL ally while they revolveinside the barrel clamped in the mold, and thus flatten or turn down theribs or folds x of the barrel X, as shown in Fig. 9. Vhen the pressureof the foot is removed from treadle E, the formers C C are retracted Vbythe flat springs C,which 9o f are secured to the slides c at their endsand to the head D near their middle, so that the finished barrel-bodywith its mold B may be reciproeated off of the formers. The formers C Care preferably made round or conical and j ournaled upon the slides c c.Rigid or non-journaled formers may, however, be employed, if desired, inwhich case the revolving former C may be made integral with its slides cc. The cone-faces d d of the pin or wedge D are simirco lar to eachother, so that the formers C C will be expanded equally at each end. ABy employing three ormore radially-expansible formers they press againstthe can or barrel at three radial points of the mold and counteract thepressure of each other, and thus serve to center the revolving head inthe mold and to better sustain and support the stock of the barrel Vorcan being acted upon.

In operating upon sheet-metal bodies of a cylindrical or other form themold .will of course be of a cylindrical or other form `to correspond tothe shape of the body.

It is preferable that the mold should conform to the shape of the can orsheet-metal body throughout its entire length, as thereby the stock isbetter supported; but it may be made to so conform only at its endswhich receive the pressure of the revolving` expansible formers. Theformers O C are duplicated at each end, so as to operate at both ends ofthe barrel at once. rIhe invention, however, may be practiced bymachines constructed to operate on only one end of the barrel at a time.

.As shown in the drawings, the mold is intended to be reciprocated byhand. It may, however, be reciprocated automatically. An equivalentconstruction of our machine would be to make the mold stationary andmount the revolving expansible former upon a reciprocating slide. Theconstruction shown, however, is the preferable one.

The upper or hinged half of the mold is locked or clamped closed bymeans of hooks or catches n on the crank-shaft N, which is journaled onthe lower half of the mold, and which hooks a fit over lips orproject-ions n on the upper half of the mold.

We hereby disclaim the screw-th reading device shown and described inthe patent to F. F. Voight, No. 335,727, of February 9, 1886. In ourinvention both the mold and the revolving former have no `reciprocatingmovement while the'work is being done, and the wedge or device forradially expanding the revolving former is movable, so that by graduallyexpanding the formers the radially-projecting ribs in the barrel-bodymay be gradually folded down without breaking or cracking the stock. Insaid Voight patent the threading-tool is in fact not radially expansiblewhile the work is being done, as in our invention, but is simplyradially adjustable.

We claiml. Ihe combination of areciprocating mold,

B,with a revolving hollow head, D, radial slides c, former C, treadle E,link E', lever E2, and collar e', substantially as specified.

2. 'Ihe combination, with a non-reciprocating revolvingradially-expansible former, of a reciprocating mold for clamping thevessel adapted to move the same over the revolving former and hold itstationary while said former is revolving and being expanded withinit,and mechanism for radially expanding said former as the samerevolves, substantially as specified.

3. The combination, with a non-reciprocating revolvingradially-expansible former, of a reciprocating mold for clam-ping thevessel adapted to move the same over the revolving former and hold itstationary While said former is revolving and being expanded within it,a revolving hollow head, D, in which said radially-expansible former isVmounted, a reciprocating wedge or pin, D, and a treadle and connectingmechanism for moving said wedge or pin, and thus radially expanding saidformer as it revolves, substantially as specified.

4. The combination, with a nonreciprocating radially-expansible former,C, having a cone-face at each end, hollow revolving head D, havinga pairof radialslides, c,upon which said former is journaled, a reciprocatingwedge or pin, D, having two inclined faces, d d, to operate said radialslides, a treadle and connecting mechanism for reciprocating said wedgeor pin,and thus radially expanding said former as it revolves, and areciprocating twopart barrel-form mold i'or clamping the vessel adaptedto move the saine over said former and hold it stationary while saidformer is revolving and being expanded within it, substantially asspecied. y

5. The coinbinatiomwith a revolving hollow head, D, having three pairsof radial slides, c o @,and radially-expansible forlners C O O,journaled upon said slides, and each having two conc-faces,reciprocating wed ge or pin D, having two cone-faces, d d, to operatesaid radial slides, springs C C O, mechanism for reciproeating said pinD and thus radially expanding said formers as they revolve, and areciprocating two-part barrel-form mold, B, for clamping the vesseladapted to move the same over said formers and hold it stationary whileIOO said formers are revolving and being expanded within it,substantially as specified.

EDWIN NORTON. JOHN G. HODGSON.

Witnesses:

S. W. Nontron, O. R. SWIFT.

